SOLUTION: The cost of a pen is 30 cents more than the cost of a pencil. Jackson spent $4.30 when he bought five pens and two pencils. Can you calculate the individual cost of a pencil and pe

Question 1088702: The cost of a pen is 30 cents more than the cost of a pencil. Jackson spent $4.30 when he bought five pens and two pencils. Can you calculate the individual cost of a pencil and pen?
Found 2 solutions by ikleyn, josmiceli:
Answer by ikleyn(52778) (Show Source): You can put this solution on YOUR website!
.

pen = pencil + 30, (1) 5 pens + 2 pencil = 430 (cents) ==========> 5*(pencil+30) + 2 pencil = 430, 5*pencil + 150 + 2 pencil = 430, 7 pencil = 430 - 150, 7 pencil = 280 ====> pencil = = 40 cents. Answer. Pencil costs 40 cents. Pen costs 40 + 30 = 70 cents.

Solved.

Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = the cost of a pencil ( in cents )
= the cost of a pen ( in cents )
---------------------
( in cents )

and

A pen costs 70 cents
A pencil costs 40 cents
-------------------------
check:

OK

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